The application number is an 8-digit number that is issued when you make an application from a partner website.
If you do not have this number, you will not be able to register for Epre even if you download the Epre app. Thus please make sure to apply from YOLO JAPAN website.
The application number is valid for 24 hours. After the expiration , please reapply from the website.
YOLO JAPAN https://www.yolo-japan.com/